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(parent: 49ea287) | patch
bpf: selftest: Add ref_tracking verifier test for bpf_skc casting
authorMartin KaFai Lau <kafai@fb.com>
Fri, 25 Sep 2020 00:04:21 +0000 (17:04 -0700)
committerAlexei Starovoitov <ast@kernel.org>
Fri, 25 Sep 2020 20:58:02 +0000 (13:58 -0700)
commited578f8e5d8ba228b2be735c6ffcc004e79ab9ee
tree092b083e6dd22a5350f77436f3fd5809cf700ce6tree | snapshot
parent49ea2870ebff6cf57b6ea2837706a809c49a85f8commit | diff
bpf: selftest: Add ref_tracking verifier test for bpf_skc casting

The patch tests for:
1. bpf_sk_release() can be called on a tcp_sock btf_id ptr.

2. Ensure the tcp_sock btf_id pointer cannot be used
   after bpf_sk_release().

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Lorenz Bauer <lmb@cloudflare.com>
Link: https://lore.kernel.org/bpf/20200925000421.3857616-1-kafai@fb.com
tools/testing/selftests/bpf/verifier/ref_tracking.c diff | blob | history
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